CN113826182B - Release type electromagnetic trip device - Google Patents
Release type electromagnetic trip device Download PDFInfo
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- CN113826182B CN113826182B CN201980096437.0A CN201980096437A CN113826182B CN 113826182 B CN113826182 B CN 113826182B CN 201980096437 A CN201980096437 A CN 201980096437A CN 113826182 B CN113826182 B CN 113826182B
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- engaging portion
- trip device
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- 230000005540 biological transmission Effects 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/36—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release
- H01H73/44—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electromagnetic release and no other automatic release reset by push-button, pull-knob or slide
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The release type electromagnetic trip device (1) has a frame (10), a lever (20), a 1 st latch (30), a reset button unit (40), a 2 nd latch (50), and an electromagnetic solenoid (60). The lever (20) is biased in a direction acting on an opening/closing mechanism of the circuit breaker, and is rotatably supported by the frame (10). The reset button unit (40) is biased in the 1 st direction, which is the direction protruding from the frame (10). When the reset button unit (40) is pressed in the opposite direction to the 1 st direction from the state of protruding from the frame (10), the 2 nd latch (50) rotates the lever (20), and the lever (20) is engaged with the 1 st latch (30). In an engagement state, which is a state in which the lever (20) is engaged with the 1 st latch (30) and the 2 nd latch (50), the electromagnetic solenoid (60) rotates the 1 st latch (30) and the 2 nd latch (50) by the plunger (61), thereby releasing the engagement state.
Description
Technical Field
The present invention relates to a release type electromagnetic trip device used for a circuit breaker such as an air circuit breaker.
Background
Conventionally, as a trip device disposed in a circuit breaker such as an air circuit breaker, a trip device that operates when an abnormal current is detected is known. When an abnormal current is detected in the circuit breaker, the release type electromagnetic trip device is brought from the initial state to the release state, and the circuit breaker is brought into the open state.
A reset button is provided in the release type electromagnetic trip device. The reset button protrudes from the release type electromagnetic trip device when the release type electromagnetic trip device is changed from the initial state to the release state. The reset button is pressed to reset the release type electromagnetic trip device, and the release type electromagnetic trip device returns from the release state to the initial state.
Patent document 1: japanese Kokai publication Hei-2-31044
Disclosure of Invention
However, in the above-described conventional technique, when the reset button is continuously pressed, the reset operation is preferentially performed. Therefore, when an abnormal current is detected while the reset button is continuously pressed, the release type electromagnetic trip device does not switch to the release state, and the circuit breaker does not become the open state.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a release type electromagnetic trip device that can set a circuit breaker in an open state by giving priority to release over reset operation in a state where a reset button is continuously pressed.
In order to solve the above problems and achieve the object, the present invention provides a release type electromagnetic trip device including a frame, a lever, a 1 st latch, a reset button unit, a 2 nd latch, and an electromagnetic solenoid, and disposed in a circuit breaker. The lever is rotatably supported by the frame and is biased in a direction acting on an opening/closing mechanism of the circuit breaker. The 1 st spring is rotatably supported by the frame and is biased in a direction of engagement with the lever. The reset button unit is movably supported by the frame, and is biased in the 1 st direction, which is the direction protruding from the frame. The 2 nd latch is biased in a direction to engage with the lever in a state rotatably supported by the reset button unit, and when the reset button unit is pressed in a 2 nd direction, which is a direction opposite to the 1 st direction, from a state protruding from the frame, the lever is rotated to engage the lever with the 1 st latch. In the engaged state, which is a state in which the lever is engaged with the 1 st latch and the 2 nd latch, the electromagnetic solenoid rotates the 1 st latch and the 2 nd latch in a direction opposite to the direction in which the plunger is biased by the protrusion of the plunger, thereby releasing the engaged state.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, the release is prioritized over the reset operation in a state where the reset button is continuously pressed, and the circuit breaker can be set to the off state.
Drawings
Fig. 1 is a diagram showing a configuration example of a circuit breaker according to embodiment 1 of the present invention.
Fig. 2 is a diagram for explaining a release type electromagnetic trip device according to embodiment 1.
Fig. 3 is a side view of the release type electromagnetic trip device according to embodiment 1 as seen from the Y-axis forward direction.
Fig. 4 is a side view of the release type electromagnetic trip device according to embodiment 1 as viewed from the Y-axis negative direction.
Fig. 5 is a side view showing a state in which one side plate of a frame in the release type electromagnetic trip device according to embodiment 1 is removed.
Fig. 6 is a side view of the release type electromagnetic trip device according to embodiment 1 in the initial state as viewed from the Y-axis forward direction.
Fig. 7 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state in which the plunger is operated, as viewed from the Y-axis forward direction.
Fig. 8 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state of being operated in the middle of the operation, as seen from the Y-axis forward direction.
Fig. 9 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state where the operation is completed, as viewed from the Y-axis forward direction.
Fig. 10 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state where the operation is completed, as viewed from the Y-axis negative direction.
Fig. 11 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state of being halfway in reset when viewed from the Y-axis forward direction.
Fig. 12 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state in the middle of reset, as viewed from the Y-axis negative direction.
Fig. 13 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state where reset is completed, as seen from the Y-axis forward direction.
Fig. 14 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state where reset is completed, as viewed from the Y-axis negative direction.
Fig. 15 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state in which the electromagnetic solenoid is operated in a state in which the reset button unit is continuously pressed, as viewed from the Y-axis forward direction.
Fig. 16 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state in which the operation is completed in a state in which the reset button unit is continuously pressed, as viewed from the Y-axis forward direction.
Detailed Description
The following describes a release type electromagnetic trip device according to an embodiment of the present invention in detail with reference to the drawings. The present invention is not limited to the present embodiment.
Embodiment 1.
Fig. 1 is a diagram showing a configuration example of a circuit breaker according to embodiment 1 of the present invention. Fig. 2 is a diagram for explaining a release type electromagnetic trip device according to embodiment 1. The left-right direction in fig. 1 and 2 is defined as an X-axis direction, the up-down direction in fig. 1 and 2 is defined as a Z-axis direction, and directions orthogonal to the X-axis direction and the Z-axis direction are defined as Y-axis directions. In other drawings, XYZ coordinates corresponding to the XYZ coordinate system shown in fig. 1 and 2 are also shown.
As shown in fig. 1, the circuit breaker 100 has: a fixed contact 110; a movable contact 111; and an opening and closing mechanism 112 that brings the movable contact 111 into contact with the fixed contact 110 or separates the movable contact 111 from the fixed contact 110. The opening and closing mechanism 112 brings the movable contact 111 into contact with the fixed contact 110, and thereby the circuit breaker 100 is brought into an on state. The opening and closing mechanism 112 separates the movable contact 111 from the fixed contact 110, and thereby the circuit breaker 100 is in an open state. The circuit breaker 100 is, for example, an air circuit breaker. The circuit breaker 100 can be provided with a release type electromagnetic trip device 1.
As shown in fig. 2, the release type electromagnetic trip device 1 has: a frame 10; a lever 20 rotatably supported by the frame 10 and biased in a direction acting on the opening/closing mechanism 112 of the circuit breaker 100; and a 1 st latch 30 rotatably supported by the frame 10 and biased in a direction to engage with the lever 20.
The release type electromagnetic trip device 1 further includes: a reset button unit 40 that is movably supported by the frame 10 and is biased in the X-axis positive direction; and a 2 nd latch 50 which is biased in a direction to engage with the lever 20 in a state rotatably supported by the reset button unit 40. The X-axis positive direction is an example of the direction in which the reset button unit 40 protrudes from the frame 10, i.e., the 1 st direction.
A reset button 41 is provided at the front end portion of the reset button unit 40. When the reset button unit 40 is pressed in the X-axis negative direction from the state protruding from the frame 10, the 2 nd latch 50 rotates the lever 20, and the 1 st latch 30 is engaged with the lever 20. The X-axis negative direction is an example of the 2 nd direction, and is the direction protruding from the frame 10, i.e., the opposite direction to the 1 st direction.
The release type electromagnetic trip device 1 includes an electromagnetic solenoid 60, and the electromagnetic solenoid 60 includes a plunger 61 and is energized to protrude the plunger 61. The electromagnetic solenoid 60 rotates the 1 st latch 30 and the 2 nd latch 50 by the protrusion of the plunger 61, and releases the engagement of the 1 st latch 30 and the 2 nd latch 50 with the lever 20.
The 1 st latch 30 is disengaged from the lever 20, and the lever 20 is thereby rotated in a direction of the opening/closing mechanism 112 acting on the circuit breaker 100, whereby the circuit breaker 100 is opened. Since the reset button unit 40 is biased in the X-axis positive direction, the engagement between the 2 nd latch 50 and the lever 20 is released, and the reset button unit moves in the X-axis positive direction, and protrudes from the release type electromagnetic trip device 1.
Then, if the reset button unit 40 is pressed in the X-axis negative direction, the 2 nd latch 50 supported by the reset button unit 40 rotates the lever 20, and the lever 20 engages with the 1 st latch 30. In a state where the reset button unit 40 is continuously pressed in the X-axis negative direction, the 1 st latch 30 and the 2 nd latch 50 are positioned so as to be rotatable in a direction to release the engagement with the lever 20 by the projection of the plunger 61.
Accordingly, in a state where the reset button unit 40 is continuously pressed in the X-axis negative direction, the engagement between the 1 st latch 30 and the 2 nd latch 50 and the lever 20 is released by the protrusion of the plunger 61, and the lever 20 rotates, so that the circuit breaker 100 is in the off state. As described above, in the release type electromagnetic trip device 1, the release by the electromagnetic solenoid 60 is prioritized in a state where the reset button 41 is continuously pressed, and the circuit breaker 100 can be set to the off state.
Next, the structure of the release type electromagnetic trip device 1 will be specifically described. Fig. 3 is a side view of the release type electromagnetic trip device according to embodiment 1 as seen from the Y-axis forward direction. Fig. 4 is a side view of the release type electromagnetic trip device according to embodiment 1 as viewed from the Y-axis negative direction. Fig. 5 is a side view showing a state in which one side plate of a frame in the release type electromagnetic trip device according to embodiment 1 is removed.
As shown in fig. 3 and 4, the frame 10 includes: 2 side plates 11, 12 which are opposed to each other in the Y-axis direction; and connecting pins 13, 14 that connect the 2 side plates 11, 12. As shown in fig. 3, a guide groove 11a for guiding the movement of the reset button unit 40 in the X-axis direction is provided in the side plate 11. As shown in fig. 4, the side plate 12 is provided with a guide groove 12a for guiding the movement of the reset button unit 40 in the X-axis direction.
Shafts 15 and 16 extending in the Y-axis direction are attached to the side plates 11 and 12, respectively. The lever 20 is rotatably supported by the side plates 11 and 12 via the shaft 15 about the axial center of the shaft 15. The 1 st latch 30 is rotatably supported by the side plates 11 and 12 via the shaft 16 around the axial center of the shaft 16.
As shown in fig. 4, the release type electromagnetic trip device 1 includes an extension spring 81, the extension spring 81 is provided so as to bridge the base end portions of the frame 10 and the reset button unit 40, and the reset button unit 40 is biased in the X-axis positive direction by the extension spring 81.
As shown in fig. 5, the release type electromagnetic trip device 1 includes: a tension spring 82 having one end attached to the frame 10 and the other end attached to the lever 20; and a tension spring 83 having one end attached to the frame 10 and the other end attached to the 1 st latch 30. The release type electromagnetic trip device 1 has an extension spring 84, one end of which is attached to the reset button unit 40 and the other end of which is attached to the 2 nd latch 50.
The lever 20 is biased in a counterclockwise direction by the tension spring 82. The 1 st latch 30 is biased in a counterclockwise direction by the tension spring 83. The 2 nd latch 50 is biased in a counterclockwise direction by the tension spring 84. Here, the counterclockwise direction is a counterclockwise direction in fig. 5, and is a counterclockwise direction when the release type electromagnetic trip device 1 is viewed from the Y-axis forward direction. Hereinafter, the description will be given assuming that the counterclockwise direction is a direction when the release type electromagnetic trip device 1 is viewed from the Y-axis forward direction, and the clockwise direction is a direction when the release type electromagnetic trip device 1 is viewed from the Y-axis forward direction.
The reset button unit 40 has: a reset button 41; and an extension 42 to which the reset button 41 is attached at the tip portion and which extends in the X-axis direction. As shown in fig. 3, a projection 43 is formed on the extension 42, and the projection 43 projects in the Y-axis positive direction and is inserted into the guide groove 11a. Further, as shown in fig. 4, a projection 44 is formed in the extension 42, and the projection 44 projects in the Y-axis negative direction and is inserted into the guide groove 12a. The other end of the extension spring 81 is attached to the base end of the extension 42. The reset button unit 40 protrudes in the positive X-axis direction when the circuit breaker 100 is in the off state, and is manually pushed in the negative X-axis direction to reset the release type electromagnetic trip device 1.
As shown in fig. 5, a shaft 45 extending in the Y-axis direction is attached to the extension 42 of the reset button unit 40. The 2 nd latch 50 is rotatably supported by the reset button unit 40 via the shaft 45 centering on the axial center of the shaft 45.
Next, the structures of the lever 20, the 1 st latch 30, the reset button unit 40, and the 2 nd latch 50 will be described in further detail. Fig. 6 is a side view of the release type electromagnetic trip device according to embodiment 1 when the initial state is seen from the Y-axis forward direction, and in fig. 6, the side plate 11 and the tension springs 81, 82, 83, 84 are not shown for convenience of explanation.
As shown in fig. 6, the lever 20 has: a 1 st side plate 21 and a 2 nd side plate 22 opposed to each other; and a connecting plate 23 connecting the ends of the 1 st side plate 21 and the 2 nd side plate 22 in the positive direction of the X-axis. The 1 st side plate 21 and the 2 nd side plate 22 are rotatably supported by the frame 10 via the shaft 15 about the axial center of the shaft 15.
A 1 st lever engaging portion 21a to be engaged with the 1 st latch 30 is formed at one end of the 1 st side plate 21. Further, a 2 nd lever engaging portion 22a and a 3 rd lever engaging portion 22b which engage with the 2 nd latch 50 are formed at one end of the 2 nd side plate 22.
The 1 st latch 30 has a trip engaging portion 31 engaged with the 1 st lever engaging portion 21a of the lever 20 at one end, and has a projection 32 facing the pressing plate 62 fixed to the distal end of the plunger 61 at the other end.
The 2 nd latch 50 has a reset engaging portion 51 engaged with the 2 nd lever engaging portion 22a and the 3 rd lever engaging portion 22b of the lever 20 at one end, and has a projecting portion 52 facing a pressing plate 62 fixed to the tip of the plunger 61 at the other end.
The release type electromagnetic trip device 1 has a transmission mechanism 70, and the transmission mechanism 70 is rotatably supported by the frame 10 via the shaft 18 extending in the Y-axis direction, and has a function of transmitting the rotational force of the lever 20 to the pressing plate 62.
Next, the operation of the release type electromagnetic trip device 1 will be described. First, a trip operation of the release type electromagnetic trip device 1 will be described. Fig. 7 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state in which the plunger is operated, as viewed from the Y-axis forward direction. Fig. 8 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state of being operated in the middle of the operation, as seen from the Y-axis forward direction. Fig. 9 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state where the operation is completed, as viewed from the Y-axis forward direction. Fig. 10 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state where the operation is completed, as viewed from the Y-axis negative direction. In fig. 7 to 10, the side plate 11 and the tension springs 81, 82, 83, and 84 are not shown for convenience of description.
When the release type electromagnetic trip device 1 is in the initial state, as shown in fig. 6, the trip engaging portion 31 of the 1 st latch 30 is engaged with the 1 st lever engaging portion 21a of the lever 20, and thus the lever 20 is prevented from rotating in the counterclockwise direction. Further, the reset engaging portion 51 of the 2 nd latch 50 engages with the 2 nd lever engaging portion 22a of the lever 20, and thus the reset button unit 40 is restrained from moving in the X-axis positive direction.
If an abnormal current is detected in the circuit breaker 100, the electromagnetic solenoid 60 is energized, and an exciting current is supplied to a coil, not shown, to generate magnetic flux from the coil. Thus, as shown in fig. 7, the plunger 61 protrudes.
If the plunger 61 protrudes, the protruding portion 32 of the 1 st latch 30 is pressed by the pressing plate 62 fixed to the tip end portion of the plunger 61, and therefore, as shown in fig. 7, the 1 st latch 30 rotates clockwise around the shaft 16. Further, since the protrusion 52 of the 2 nd latch 50 is pressed by the pressing plate 62, the 2 nd latch 50 rotates clockwise around the shaft 45 as shown in fig. 7.
Accordingly, the trip engaging portion 31 of the 1 st latch 30 and the 1 st lever engaging portion 21a of the lever 20 are disengaged, and the reset engaging portion 51 of the 2 nd latch 50 and the 2 nd lever engaging portion 22a of the lever 20 are disengaged. The trip engaging portion 31 of the 1 st latch 30 and the 1 st lever engaging portion 21a of the lever 20 are disengaged, and thereby the lever 20 rotates counterclockwise about the shaft 15 as shown in fig. 8 and 9. Accordingly, the lever 20 acts on the latch of the opening and closing mechanism 112, and the movable contact 111 is separated from the fixed contact 110 by the opening and closing mechanism 112.
Further, the protrusion 24 of the lever 20 contacts the one end 71 of the transmission mechanism 70 by the rotation of the lever 20 in the counterclockwise direction, and rotates the one end 71 of the transmission mechanism 70 in the clockwise direction around the shaft 18. As a result, as shown in fig. 9, the other end 72 of the transmission mechanism 70 rotates in the clockwise direction, and the other end 72 of the transmission mechanism 70 presses the pressing plate 62. Accordingly, the plunger 61 returns to the inside of the electromagnetic solenoid 60, and the electromagnetic solenoid 60 returns to the original state.
Since the engagement between the reset engaging portion 51 and the 2 nd lever engaging portion 22a is released, the reset button unit 40 is moved in the X-axis positive direction by the tension spring 81 shown in fig. 4 and protrudes from the release type electromagnetic trip device 1 as shown in fig. 9 and 10. At this time, the protruding portions 43, 44 of the reset button unit 40 come into contact with the end portions of the guide grooves 11a, 12a, thereby restricting the movement of the reset button unit 40 in the X-axis positive direction.
Next, the reset of the release type electromagnetic trip device 1 will be described. Fig. 11 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state of being halfway in reset when viewed from the Y-axis forward direction. Fig. 12 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state in the middle of reset, as viewed from the Y-axis negative direction. Fig. 13 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state where reset is completed, as seen from the Y-axis forward direction. Fig. 14 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state where reset is completed, as viewed from the Y-axis negative direction. In fig. 11 to 14, the side plate 11 and the tension springs 81, 82, 83, and 84 are not shown for convenience of description.
The release type electromagnetic trip device 1 is reset by manually pushing the reset button unit 40 in the X-axis negative direction from the state shown in fig. 9 and 10. If the reset button unit 40 moves in the X-axis negative direction, as shown in fig. 11 and 12, the reset engaging portion 51 of the 2 nd latch 50 rotatably supported by the reset button unit 40 engages with the 3 rd lever engaging portion 22b of the lever 20.
Since the reset engaging portion 51 of the 2 nd latch 50 moves in the X-axis negative direction with the movement of the reset button unit 40 in the X-axis negative direction, the lever 20 rotates in the clockwise direction with the movement of the reset engaging portion 51 in the X-axis negative direction. As shown in fig. 13 and 14, the 1 st lever engaging portion 21a of the lever 20 moves to an initial position where it engages with the trip engaging portion 31 of the 1 st latch 30, and the release type electromagnetic trip device 1 is in a reset state. In this reset state, the engagement between the 3 rd lever engagement portion 22b of the lever 20 and the reset engagement portion 51 of the 2 nd latch 50 is continued.
When the state in which the reset button unit 40 is pushed in is released, the reset button unit 40 and the 2 nd latch 50 return to the X-axis forward direction by the elastic force of the tension spring 81 shown in fig. 4, and as shown in fig. 6, the 2 nd latch 50 engages with the lever 20 whose rotation is restricted by engagement with the 1 st latch 30. Therefore, the reset button unit 40 and the 2 nd latch 50 are restricted from moving in the X-axis forward direction, and are maintained at the initial positions.
Next, the operation of the release type electromagnetic trip device 1 in the case where the electromagnetic solenoid 60 is energized in a state in which the reset button unit 40 is continuously pressed after the release type electromagnetic trip device 1 is reset will be described. Fig. 15 is a side view of the release type electromagnetic trip device according to embodiment 1 in a state in which the electromagnetic solenoid is operated in a state in which the reset button unit is continuously pressed, as viewed from the Y-axis forward direction. Fig. 16 is a side view of the release-type electromagnetic trip device according to embodiment 1 in a state in which the operation is completed in a state in which the reset button unit is continuously pressed, as viewed from the Y-axis forward direction. In fig. 15 and 16, the side plate 11 and the tension springs 81, 82, 83, and 84 are not shown for convenience of description.
If an abnormal current is detected in the circuit breaker 100, the electromagnetic solenoid 60 is energized. As shown in fig. 15, in the release type electromagnetic trip device 1, if the electromagnetic solenoid 60 is energized from a state in which the reset button unit 40 is continuously pressed, the plunger 61 of the electromagnetic solenoid 60 protrudes.
If the plunger 61 protrudes, the protruding portion 32 of the 1 st latch 30 is pressed by the pressing plate 62 fixed to the tip end portion of the plunger 61, and therefore the 1 st latch 30 rotates clockwise around the shaft 16. Further, since the pressing plate 62 presses the projecting portion 52 of the 2 nd latch 50, the 2 nd latch 50 rotates clockwise around the shaft 45.
Accordingly, the trip engaging portion 31 of the 1 st latch 30 and the 1 st lever engaging portion 21a of the lever 20 are disengaged, and the reset engaging portion 51 of the 2 nd latch 50 and the 3 rd lever engaging portion 22b of the lever 20 are disengaged. As a result, as shown in fig. 16, since the lever 20 rotates counterclockwise around the shaft 15, the lever 20 acts on the latch of the opening/closing mechanism 112, and the circuit breaker 100 is in the open state.
As described above, the release type electromagnetic trip device 1 prioritizes release even in a state where the reset button unit 40 is continuously pressed, and can set the circuit breaker 100 to the off state. In addition, in the state shown in fig. 16, since the lever 20 and the 2 nd latch 50 are not engaged, if the state of pressing the reset button unit 40 is stopped, the reset button unit 40 moves in the X-axis positive direction by the elastic force of the tension spring 81 shown in fig. 4. Thus, the release type electromagnetic trip device 1 is in the state shown in fig. 9 and 10.
As described above, the release type electromagnetic trip device 1 according to embodiment 1 is a release type electromagnetic trip device provided in the circuit breaker 100. The release type electromagnetic trip device 1 has a frame 10, a lever 20, a 1 st latch 30, a reset button unit 40, a 2 nd latch 50, and an electromagnetic solenoid 60. The lever 20 is rotatably supported by the frame 10, and is biased in a direction acting on the opening/closing mechanism 112 of the circuit breaker 100. The 1 st latch 30 is rotatably supported by the frame 10 and is biased in a direction to engage with the lever 20. The reset button unit 40 is supported movably on the frame 10 and is biased in the X-axis positive direction. The 2 nd latch 50 is rotatably supported by the reset button unit 40 and is biased in a direction of engagement with the lever 20. When the reset button unit 40 is pressed in the X-axis negative direction from the state protruding from the frame 10, the 2 nd latch 50 rotates the lever 20, and the lever 20 and the 1 st latch 30 are engaged. In the engaged state, which is the state in which the lever 20 is engaged with the 1 st latch 30 and the 2 nd latch 50, the electromagnetic solenoid 60 rotates the 1 st latch 30 and the 2 nd latch 50 by the protrusion of the plunger 61, and releases the engaged state. Accordingly, the release type electromagnetic trip device 1 prioritizes release over the reset operation in a state where the reset button 41 is continuously pressed, and can put the circuit breaker 100 in the off state.
In addition, the lever 20 has: a 1 st lever engaging portion 21a which engages with the 1 st latch 30; a 2 nd lever engagement portion 22a engaged with the 2 nd latch 50; and a 3 rd lever engagement portion 22b engaged with the 2 nd latch 50. The 1 st latch 30 has a trip engaging portion 31 engaged with the 1 st lever engaging portion 21a. The 2 nd latch 50 has a reset engaging portion 51 engaged with the 2 nd lever engaging portion 22a and the 3 rd lever engaging portion 22b. The 1 st lever engagement portion 21a is engaged with the trip engagement portion 31 of the 1 st latch 30 to thereby restrain the 1 st lever engagement portion 21a from rotating in a direction acting on the opening/closing mechanism 112. The movement of the reset button unit 40 in the X-axis forward direction is suppressed by the engagement of the 2 nd lever engagement portion 22a and the reset engagement portion 51 of the 2 nd latch 50. When the reset button unit 40 is pressed in the X-axis negative direction from the state protruding from the frame 10, the lever 20 is rotated by the engagement of the 3 rd lever engagement portion 22b and the reset engagement portion 51 of the 2 nd latch 50, and the lever 20 is engaged with the 1 st latch 30. As described above, the release type electromagnetic trip device 1 has the 2 nd lever engaging portion 22a and the 3 rd lever engaging portion 22b engaged with the 2 nd latch 50 in the lever 20, and thus can give priority to release over reset operation relatively easily.
The lever 20 includes a 1 st side plate 21 formed with a 2 nd lever engagement portion 22a, a 2 nd side plate 22 formed with a 3 rd lever engagement portion 22b, and a connecting plate 23 connecting the 1 st side plate 21 and the 2 nd side plate 22. This makes it possible to easily dispose the lever 20, the 1 st latch 30, and the 2 nd latch 50.
The configuration shown in the above embodiment shows an example of the content of the present invention, and other known techniques may be combined, and a part of the configuration may be omitted or changed without departing from the scope of the present invention.
Description of the reference numerals
The 1 release type electromagnetic trip device, 10 frame, 11, 12 side plate, 11a, 12a guide groove, 13, 14 link pin, 15, 16, 18 shaft, 20 lever, 21 st side plate, 21a 1 st lever engaging portion, 22 nd side plate, 22a 2 nd lever engaging portion, 22b 3 rd lever engaging portion, 23 link plate, 30 st latch, 31 trip engaging portion, 32, 43, 44, 52 protrusion portion, 40 reset button unit, 41 reset button, 42 extension portion, 45 shaft, 50 nd latch, 51 reset engaging portion, 60 electromagnetic solenoid, 61 plunger, 62 press plate, 70 transmission mechanism, 71 one end portion, 72 other end portion, 81, 82, 83, 84 tension spring, 100 circuit breaker, 110 fixed contact, 111 movable contact, 112 opening and closing mechanism.
Claims (3)
1. A release type electromagnetic trip device is configured on a circuit breaker,
the release type electromagnetic trip device is characterized by comprising:
a frame;
a lever rotatably supported by the frame and biased in a direction acting on an opening/closing mechanism of the circuit breaker;
a 1 st latch rotatably supported by the frame and biased in a direction to engage with the lever;
a reset button unit movably supported by the frame and biased in a 1 st direction which is a direction protruding from the frame;
a 2 nd latch that is biased in a direction to engage with the lever in a state rotatably supported by the reset button unit, and rotates the lever to engage the lever with the 1 st latch when the reset button unit is pressed in a 2 nd direction, which is a direction opposite to the 1 st direction, from a state protruding from the frame; and
and an electromagnetic solenoid configured to release an engaged state by rotating the 1 st latch and the 2 nd latch in a direction opposite to a direction in which the 1 st latch and the 2 nd latch are biased by a protrusion of a plunger in the engaged state, which is a state in which the lever is engaged with the 1 st latch and the 2 nd latch.
2. The release type electromagnetic trip device according to claim 1, wherein,
the lever has: a 1 st lever engaging portion engaged with the 1 st latch; a 2 nd lever engagement portion engaged with the 2 nd latch; and a 3 rd lever engaging portion engaged with the 2 nd latch,
the 1 st latch has an engaging portion engaged with the 1 st lever engaging portion,
the 2 nd latch is provided with an engaging portion engaged with the 2 nd lever engaging portion and the 3 rd lever engaging portion,
by engaging the 1 st lever engaging portion with the engaging portion of the 1 st latch, rotation of the lever in a direction acting on the opening/closing mechanism is suppressed,
by the engagement of the 2 nd lever engaging portion and the engaging portion of the 2 nd latch, the movement of the reset button unit in the 1 st direction is suppressed,
when the reset button unit is pressed in the 2 nd direction from the state protruding from the frame, the 3 rd lever engaging portion is engaged with the engaging portion of the 2 nd latch to rotate the lever, thereby engaging the lever with the 1 st latch.
3. The release type electromagnetic trip device according to claim 2, wherein,
the lever has: a 1 st side plate formed with the 2 nd lever engagement portion; a 2 nd side plate formed with the 3 rd lever engagement portion; and a connecting plate connecting the 1 st side plate and the 2 nd side plate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/019929 WO2020234972A1 (en) | 2019-05-20 | 2019-05-20 | Release-type electromagnetic tripping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113826182A CN113826182A (en) | 2021-12-21 |
| CN113826182B true CN113826182B (en) | 2023-12-05 |
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ID=73458767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980096437.0A Active CN113826182B (en) | 2019-05-20 | 2019-05-20 | Release type electromagnetic trip device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7051007B2 (en) |
| CN (1) | CN113826182B (en) |
| TW (1) | TWI749545B (en) |
| WO (1) | WO2020234972A1 (en) |
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| JPH0221523A (en) * | 1988-07-08 | 1990-01-24 | Mitsubishi Electric Corp | Release type electromagnetic tripping device |
| JPH07123020B2 (en) * | 1986-09-25 | 1995-12-25 | 東芝ライテック株式会社 | Circuit breaker |
| CN1244025A (en) * | 1998-05-07 | 2000-02-09 | 尹顿公司 | Closing support and ejecting assembly for energy storing mechanism of electric switch plant |
| JP2001155593A (en) * | 1999-12-01 | 2001-06-08 | Hitachi Ltd | Electromagnetically operating switch |
| CN103119682A (en) * | 2010-12-21 | 2013-05-22 | 松下电器产业株式会社 | Circuit breaker |
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| CN108281329A (en) * | 2018-03-28 | 2018-07-13 | 温州华嘉电器有限公司 | A kind of miniature circuit breaker that electric terminal uses |
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|---|---|---|---|---|
| JPS4715297B1 (en) * | 1966-12-30 | 1972-05-08 | ||
| JPH0621160Y2 (en) * | 1988-08-20 | 1994-06-01 | 三菱電機株式会社 | Release type electromagnetic trip device for circuit breaker |
| JPH0568041U (en) * | 1992-02-21 | 1993-09-10 | 三菱電機株式会社 | Circuit breaker |
| US5886599A (en) * | 1997-12-15 | 1999-03-23 | Eaton Corporation | Molded case circuit breaker having an improved electromagnetic trip |
| CN107768203B (en) * | 2016-08-15 | 2019-10-11 | 浙江正泰电器股份有限公司 | Direct driving type electromagnetic trip gear |
| CN109727830A (en) * | 2017-10-28 | 2019-05-07 | 王静洋 | A kind of circuit breaker operation mechanism driven using electromagnetic vibrator |
| CN109461634B (en) * | 2018-12-18 | 2024-06-11 | 浙江中亿豪科技有限公司 | Hydraulic electromagnetic circuit breaker actuator |
-
2019
- 2019-05-20 JP JP2021520534A patent/JP7051007B2/en active Active
- 2019-05-20 CN CN201980096437.0A patent/CN113826182B/en active Active
- 2019-05-20 WO PCT/JP2019/019929 patent/WO2020234972A1/en active Application Filing
-
2020
- 2020-05-07 TW TW109115188A patent/TWI749545B/en active
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|---|---|---|---|---|
| JPH07123020B2 (en) * | 1986-09-25 | 1995-12-25 | 東芝ライテック株式会社 | Circuit breaker |
| JPH0221523A (en) * | 1988-07-08 | 1990-01-24 | Mitsubishi Electric Corp | Release type electromagnetic tripping device |
| CN1244025A (en) * | 1998-05-07 | 2000-02-09 | 尹顿公司 | Closing support and ejecting assembly for energy storing mechanism of electric switch plant |
| JP2001155593A (en) * | 1999-12-01 | 2001-06-08 | Hitachi Ltd | Electromagnetically operating switch |
| CN103119682A (en) * | 2010-12-21 | 2013-05-22 | 松下电器产业株式会社 | Circuit breaker |
| CN205428852U (en) * | 2016-01-14 | 2016-08-03 | 浙江正泰电器股份有限公司 | Operation mechanism of small breaker |
| CN206516584U (en) * | 2017-02-08 | 2017-09-22 | 浙江正泰电器股份有限公司 | Miniature circuit breaker |
| CN108281329A (en) * | 2018-03-28 | 2018-07-13 | 温州华嘉电器有限公司 | A kind of miniature circuit breaker that electric terminal uses |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7051007B2 (en) | 2022-04-08 |
| WO2020234972A1 (en) | 2020-11-26 |
| CN113826182A (en) | 2021-12-21 |
| JPWO2020234972A1 (en) | 2021-10-14 |
| TW202044300A (en) | 2020-12-01 |
| TWI749545B (en) | 2021-12-11 |
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